hello.
2 week ago our mail server was bruteforced and server IP got in the blacklist at bl.spamcop.net.
Trouble fixed now, IP delisted from BL.
Here http://ipremoval.sms.symantec.com/lookup/ and here
http://www.senderbase.org/lookup/ we have Email Reputation: Neutral.
But all of "cluster*.*.messagelabs.com" are ignoring our server IP.
Mon 2016-07-25 00:40:01: MX-record resolution of [lenovo.com] in progress (DNS Server: 127.0.0.1)...
Mon 2016-07-25 00:40:01: * P=010 S=001 D=lenovo.com TTL=(4) MX=[cluster9.us.messagelabs.com]
Mon 2016-07-25 00:40:01: * P=020 S=000 D=lenovo.com TTL=(4) MX=[cluster9a.us.messagelabs.com]
Mon 2016-07-25 00:40:01: Attempting MX: P=010 S=001 D=lenovo.com TTL=(4) MX=[cluster9.us.messagelabs.com]
Mon 2016-07-25 00:40:01: Attempting SMTP connection to [cluster9.us.messagelabs.com : 25]
Mon 2016-07-25 00:40:01: A-record resolution of [cluster9.us.messagelabs.com] in progress (DNS Server: 127.0.0.1)...
Mon 2016-07-25 00:40:01: D=cluster9.us.messagelabs.com TTL=(6) A=[216.82.249.35]
Mon 2016-07-25 00:40:01: Attempting SMTP connection to [216.82.249.35 : 25]
Mon 2016-07-25 00:40:01: Waiting for connection...
Mon 2016-07-25 00:40:22: Winsock Error 10060 The connection timed out.
Our IP is 62.152.69.157. Can you check it, plz.
Thank you.